#include<stdio.h>
#define SIZE 5
void show_array(const double ar[], int n);
void mult_array(double ar[], int n, double mu);
int main(void)
{
	double dip[SIZE] = {20.0, 17.66, 8.2, 15.3, 22.22};
	printf("Original dip array:\n");
	show_array(dip, SIZE);
	mult_array(dip, SIZE, 2.5);
	printf("The dip after calling mult_array():\n");
	show_array(dip, SIZE);
	return 0;
}

//显示数组内容
void show_array(const double ar[], int n)
{
	int i;
	for(i = 0; i < n; i++)
		printf("%8.3f ",ar[i]);
	putchar('\n');
}

//把数组的每个元素乘以相同的值

void mult_array(double ar[], int n, double mu)
{
	int i;
	for(i = 0; i < n; i++)
	{
		ar[i] *= mu;
	}
}
